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Looking for bolt size

Forum: C3 Engines, Driveline and Handling

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Looking for bolt size

Posted: 4/10/12 5:20pmMessage 1 of 7
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tinbender
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edgwood, MD - USA
Joined: 11/1/2007
Posts: 737
Vette(s): 1975 convertible,with the hard top and power streering.it a 350 L48 with auto trans. the color is light blue.
I'm changing the hold down on my valve covers from studs back to bolts....my question is what is what size bolts are used with the black finned alumnimum covers.(1/4-20 x?)
                         Rick
 


|UPDATED|4/10/2012 5:20:26 PM (AZT)|/UPDATED|
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Re: Looking for bolt size

Posted: 4/10/12 6:32pmMessage 2 of 7
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danascar
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Germansville, PA - USA
Joined: 1/28/2010
Posts: 865
Vette(s): 1974 Coupe 358ci 4 speed Black w/Medium Saddle interior w/79 custom leather seats. . 1999 C5 Convertible, 6 speed, Atomic orange, Oak interior.
Yup...1/4-20 if older style heads...center bolt heads????.
   

DanT

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Re: Looking for bolt size

Posted: 4/10/12 6:35pmMessage 3 of 7
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Jaws79
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Sykesville, MD - USA
Joined: 4/27/2008
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Vette(s): 1979 Corvette Coupe Corvette Light Blue Midnight Blue interior Mirrored Glass T-tops
I think Rick wants the length, Dan! I'm not sure of that! Sorry, Rick!
 
Barry
 
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Re: Looking for bolt size

Posted: 4/10/12 6:51pmMessage 4 of 7
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danascar
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Germansville, PA - USA
Joined: 1/28/2010
Posts: 865
Vette(s): 1974 Coupe 358ci 4 speed Black w/Medium Saddle interior w/79 custom leather seats. . 1999 C5 Convertible, 6 speed, Atomic orange, Oak interior.
You are right as usual Barry...didn't read past the 1/4-20....Wacko

|UPDATED|4/10/2012 6:51:05 PM (AZT)|/UPDATED|
   

DanT

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Re: Looking for bolt size

Posted: 4/11/12 3:08amMessage 5 of 7
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Jeffm
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Sebago Lake, ME - USA
Joined: 2/15/2007
Posts: 964
Vette(s): 1978 Silver Anniversary L82 4spd (M21) Red Leather. Pace Car is in the hands of a new caretaker.
Found one I replaced. Measures 1" from below the head. Some of the suppliers sell the corect replacements for the finned aluminum covers.
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Re: Looking for bolt size

Posted: 4/11/12 5:40amMessage 6 of 7
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tinbender
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edgwood, MD - USA
Joined: 11/1/2007
Posts: 737
Vette(s): 1975 convertible,with the hard top and power streering.it a 350 L48 with auto trans. the color is light blue.
Sorry about that.....yep Barry I'm looking for the length,I don know if they are 1/4-20x1 or 1/4-20x1-1/4
                                Rick
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Re: Looking for bolt size

Posted: 4/11/12 9:37amMessage 7 of 7
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Adams' Apple
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22715
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Ya gotta figure in the thickness of the gaskets, too. There are some out there that are about twice as thick as originals...most aftermarket gaskets seem to be a little thicker. So, if you happen to have the cast covers with thick gaskets, the 1 1/4" will prolly be correct.

Joel Adams
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